Home / 318,117.58-477,172.17-78,233.55

Finding the Fourth Proportional to 318,117.58, 477,172.17 and 78,233.55

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Solution

The fourth proportional to 318,117.58, 477,172.17 and 78,233.55 is: 117,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,117.58 : 477,172.17 = 78,233.55 : x
  2. Step 2: Convert to fraction form
    318,117.58/477,172.17 = 78,233.55/x
  3. Step 3: Cross multiply
    318,117.58x = 477,172.17 × 78,233.55
  4. Step 4: Simplify right side
    318,117.58x = 37,330,872,820.30
  5. Step 5: Solve for x
    x = 37,330,872,820.30/318,117.58
  6. Step 6: Final answer
    x = 117,349.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.